Pinpoint tests of windscreen wipers (cars up to 08.2001)

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PINPOINT TEST A: WINDSHIELD WIPERS DO NOT WORK

STATES

DETAILS/RESULTS/ACTIONS

A1: CHECK FUSE F55

1Enter the OFF position.

2CHECK Fuse F55 (CJB).

3CHECK FUSE F55 (20A)

• Is the fuse good?

Yes

Go to A2

No

Install a new fuse F55 (20A). If the fuse blows again, LOCATE and REPAIR the short circuit using the wiring diagrams. CHECK the system for proper operation.

A2: CHECK POWER SUPPLY TO FUSE F55

1Connect Fuse F55 (CJB).

2Enter the ON position.

3Measure the voltage between fuse F55 and ground.

• Is battery voltage registered?

Yes

Cars with rear window wipers: Go to A3

Cars without rear window wipers: Go to A5

No

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.

A3: CHECK FUSE F43

1Enter the OFF position.

2CHECK Fuse F43 (CJB).

3CHECK FUSE F43 (15A)

• Is the fuse good?

Yes

Go to A4

No

Install a new fuse F43 (15A). If the fuse blows again, LOCATE and REPAIR the short circuit using the wiring diagrams. CHECK the system for proper operation.

A4: CHECK POWER SUPPLY TO FUSE F43

1Connect Fuse F43 (CJB).

2Enter the ON position.

3Measure the voltage between fuse F43 and ground.

• Is battery voltage registered?

Yes

Go to A5

No

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.

A5: CHECK POWER SUPPLY TO WIPER/WASHER SWITCH

1CHECK the system using WDS. If any DTCs are reported, resolve those codes. CHECK the system for proper operation. If the system fails again, perform the following testing steps.

2Enter the OFF position.

3Disconnect Windscreen Wiper/Washer Switch - C441.

4Enter the ON position.

5Measure the voltage between wiper/washer switch pin 6 C441, circuit 15-KA19 (Green/Orange), harness side and ground.

• Is battery voltage registered?

Yes

Windshield wipers not working: Go to A6

Rear Window Wipers Not Working: Go to A8

No

REPAIR the short circuit(s) between the wiper/washer switch and CJB pin 1 C17 using the wiring diagrams. CHECK the system is operating correctly.

A6: CHECK THE LOW-SPEED POWER SUPPLY SUPPLIED TO THE ELECTRIC MOTOR OF THE WINDSHIELD CLEANERS

1Enter the OFF position.

2Connect Windscreen Wiper/Washer Switch - C441.

3Disconnect Windshield Wiper Motor - C848.

4Enter the ON position.

5Move the wiper/washer switch to the LOW SPEED position.

6Measure the voltage between windshield wiper motor pin 5 C848, circuit 32-KA10 (WH/GN), harness side and ground.

• Is battery voltage registered?

Yes

Go to A7

No

CHECK the wiper/washer switch according to the component testing instructions included with this section. If necessary, INSTALL a new component. CHECK the system for proper operation.

A7: CHECK GROUND CONNECTION OF WINDSHIELD WIPER MOTOR

1Measure the resistance between pin 1 C848 of the windshield wiper motor, circuit 31-KA9 (Black), harness side and ground.

• Is the resistance less than 2 ohms?

Yes

CHECK the windshield wiper motor according to the component testing instructions included with this section. If necessary, INSTALL a new component. CHECK the system for proper operation.

No

REPAIR the short(s) between the windshield wiper motor and ground G37 using the wiring diagrams. CHECK the system for proper operation.

A8: CHECK REAR WIPER MOTOR GROUND CONNECTION

1Enter the OFF position.

2CHECK the rear window wiper motor housing ground connection.

• Is the ground connection good?

Yes

Go to A9

No

REPAIR the ground connection between the rear window wiper motor housing and ground. CHECK that the system is operating correctly.

A9: CHECK POWER SUPPLY TO REAR WIPER RELAY

1Connect Windscreen Wiper/Washer Switch - C441.

2Disconnect Rear Window Wiper Relay - C1018.

3Enter the ON position.

4Measure the voltage between pin 5 of the rear window wiper relay C1018 and ground.

• Is battery voltage registered?

Yes

Go to A10

No

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.

A10: CHECK REAR WIPER RELAY CONTROL CIRCUIT

1Measure the voltage between pin 1 of the rear window wiper relay C1018 and ground.

• Is battery voltage registered?

Yes

Go to A11

No

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.

A11: CHECK REAR WIPER RELAY

1Test the rear window wiper relay according to the component testing instructions included with this section.

• Is the relay working properly?

Yes

Go to A12

No

INSTALL a new rear wiper relay. CHECK the system for proper operation.

A12: CHECK CJB

1Enter the OFF position.

2Connect Rear Window Wiper Relay - C1018.

3Disconnect Central Junction Box (CJB).- C14.

4Measure the resistance at CJB connector C14, between pin 3 and pin 10, CJB side.

• Is the resistance less than 2 ohms?

Yes

Go to A13

No

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.

A13: CHECK REAR WIPER RELAY GROUND CIRCUIT

1Enter the OFF position.

2Measure the resistance between pin 3 C14 CJB harness side and ground.

• Is the resistance less than 2 ohms?

Yes

Go to A14

No

REPAIR short circuit(s) between CJB pin 3 C14 and ground G14 using the wiring diagrams. CHECK the system for proper operation.

A14: CHECK REAR WIPER CONTROL CIRCUIT TO CTM

1Enter the ON position.

2Move the wiper/washer switch to the REAR WIPER position.

3Measure the voltage between pin 5 C14 CJB, circuit 32-KA35 (WH/RD), harness side and ground.

• Is battery voltage registered?

Yes

Go to A16

No

Go to A15

A15: CHECK WIPER/WASHER SWITCH

1Enter the OFF position.

2Disconnect Windscreen Wiper/Washer Switch - C441.

3Connect the jumper wire to the C441 windshield wiper/washer switch connector, between pin 6, circuit 15-KA19 (green/orange) and pin 5, circuit 32-KA35 (white/red), on the harness side.

4Enter the ON position.

5Measure the voltage between pin 5 C14 CJB, circuit 32-KA35 (WH/RD), harness side and ground.

• Is battery voltage registered?

Yes

CHECK the wiper/washer switch according to the component testing instructions included with this section. If necessary, INSTALL a new component. CHECK the system for proper operation.

No

REPAIR the short circuit(s) between CJB pin 5 C14 and the wiper/washer switch using the wiring diagrams. CHECK the system is operating correctly.

A16: CHECK CJB

1Enter the OFF position.

2Disconnect the Central Timer Module (CTM) - C1000.

3Measure the resistance on the CJB between pin 5 of C14 and pin 28 of C1000 CTM.

• Is the resistance less than 2 ohms?

Yes

Go to A17

No

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.

A17: CHECK ELECTRICAL CIRCUIT TO REAR WIPER MOTOR

1Connect Central Junction Box (CJB) - C14.

2Connect the Central Timer Module (CTM) - C1000.

3Disconnect the Rear Window Wiper Motor - C971.

4Enter the ON position.

5Measure the voltage between rear window wiper motor pin 1 C971, circuit 15-KA28 (GN/BL), harness side and ground.

• Is battery voltage registered?

Yes

Go to A18

No

ELIMINATE the short circuit (s) between the wiper/washer switch and the electric motor of the rear window cleaners by using electrical wiring diagrams. CHECK that the system is working correctly.

A18: CHECK THE NON-OPERATING WIPER CIRCUIT THAT IS DIRECTED TO THE ELECTRIC MOTOR OF THE REAR WINDOW CLEANERS

1Move the wiper/washer switch to the REAR WIPER position.

2Measure the voltage between rear window wiper motor pin 2 C971, circuit 32-KA28 (WH/RD), harness side and ground.

• Is battery voltage registered?

Yes

CHECK the rear window wiper motor according to the component testing instructions included with this section, INSTALL a new component if necessary. CHECK the system for proper operation.

No

ELIMINATE the short circuit (s) between the wiper/washer switch and the electric motor of the rear window cleaners by using electrical wiring diagrams. CHECK that the system is working correctly.



PINPOINT TEST B: WIPERS WORK CONTINUOUSLY


STATES

DETAILS/RESULTS/ACTIONS

B1: CHECK THE SYSTEM USING WDS

1Check the system using WDS.

• Are any DTCs logged?

Yes

Process these codes. CHECK the system is working properly.

No

Rear window wipers operate continuously: Go to B8

Windshield wipers run continuously: Go to B2

B2: CHECK THE STATE IN WHICH THE MALFUNCTION OCCURRES

1Enter the OFF position.

2Disconnect Windshield Wiper Relay - C1019.

3Enter the ON position.

4Check the windshield wipers.

• Do the windshield wipers operate continuously?

Yes

Go to B6

No

Go to B3

B3: CHECK WINDSHIELD WIPER RELAY CONTROL CIRCUIT FOR SHORT TO GROUND"

1Enter the OFF position.

2Measure the resistance between pin 2 of the windshield wiper relay C1019 and ground.

• Is the resistance more than 10 kOhm?

Yes

Go to B4

No

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.

B4: CHECK WINDSHIELD WIPER RELAY

1CHECK the windshield wiper relay according to the component testing instructions included with this section.

• Is the relay working properly?

Yes

Go to B5

No

INSTALL a new windshield wiper relay. CHECK the system for proper operation.

B5: CHECK THE WIPER/WASHER SWITCH FOR CORRECT OPERATION

1Enter the OFF position.

2Disconnect Windscreen Wiper/Washer Switch - C441.

3CHECK the wiper/washer switch according to the component testing instructions included with this section.

• Is the switch working properly?

Yes

REPAIR the short to power in the circuit connected to wiper/washer switch pin 10 C441 using the wiring diagrams. CHECK the system for proper operation.

No

INSTALL a new wiper/washer switch. CHECK the system for proper operation.

B6: DETERMINE THE STATE

1Enter the OFF position.

2Connect Windshield Wiper Relay - C1019.

3Disconnect Windscreen Wiper/Washer Switch - C441.

4Enter the ON position.

5Check the windshield wipers.

• Are the windshield wipers on continuously?

Yes

Go to B7

No

CHECK the wiper/washer switch according to the component testing instructions included with this section. If necessary, INSTALL a new component. CHECK the system for proper operation.

B7: CHECK HIGH SPEED WIPER CIRCUIT TO WINDSHIELD WIPER MOTOR

1Measure the voltage between wiper/washer switch pin 8 C441, circuit 32-KA11 (WH/BK), harness side and ground.

• Is battery voltage registered?

Yes

REPAIR the short to power in the circuit connected to pin 8 C441 of the wiper/washer switch using the wiring diagrams. CHECK the correct operation of the system.

No

CHECK the windshield wiper motor according to the component testing instructions included with this section. If necessary, INSTALL a new component. CHECK the system for proper operation.

B8: CHECK REAR WIPER RELAY

1Enter the OFF position.

2Disconnect Rear Window Wiper Relay - C1018.

3Enter the ON position.

4Check the windshield wipers.

• Are the windshield wipers on continuously?

Yes

Go to B9

No

Go to B10

B9: CHECK WIPER/WASHER SWITCH

1Enter the OFF position.

2Connect Rear Window Wiper Relay - C1018.

3Disconnect Windscreen Wiper/Washer Switch - C441.

4Enter the ON position.

5Check the windshield wipers.

• Are the windshield wipers on continuously?

Yes

CHECK the rear window wiper motor according to the component testing instructions included with this section. If necessary, INSTALL a new component. CHECK the system for proper operation.

No

CHECK the wiper/washer switch according to the component testing instructions included with this section. If necessary, INSTALL a new component. CHECK the system for proper operation.

B10: CHECK REAR WIPER RELAY FOR CORRECT OPERATION

1CHECK the rear window wiper relay according to the component testing instructions included with this section.

• Is the relay working properly?

Yes

Go to B11

No

INSTALL a new rear wiper relay. CHECK the system for proper operation.

B11: CHECK REAR WIPER RELAY CONTROL CIRCUIT FOR SHORT TO GROUND"

1Enter the OFF position.

2Measure the resistance between pin 2 of the rear window wiper relay C1018 and ground.

• Does the resistance exceed 10 kOhm?

Yes

CHECK the wiper/washer switch according to the component testing instructions included with this section. If necessary, INSTALL a new component. CHECK the system for proper operation.

No

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.



PINPOINT TEST C: LOW/HIGH SPEED WIPER FUNCTIONING PROPERLY (INTERMITTENT WIPER FUNCTIONING PROPERLY)


STATES

DETAILS/RESULTS/ACTIONS

C1: CHECK LOW SPEED WIPER CIRCUIT TO WINDSHIELD WIPER MOTOR

1CHECK the system using WDS. If any DTCs are reported, resolve those codes. CHECK the system for proper operation. If the system fails again, perform the following testing steps.

2Enter the OFF position.

3Disconnect Windshield Wiper Motor - C848.

4Enter the ON position.

5Move the wiper/washer switch to the LOW SPEED position.

6Measure the voltage between windshield wiper motor C848 pin 5, circuit 32-KA10 (WH/GN), and ground.

• Is battery voltage registered?

Yes

Go to C2

No

CHECK the wiper/washer switch according to the component testing instructions included with this section. If necessary, INSTALL a new component. CHECK the system for proper operation.

C2: CHECK POWER SUPPLY TO HIGH SPEED WIPER CIRCUIT TO WINDSHIELD WIPER MOTOR

1Move the wiper/washer switch to the HIGH SPEED WIPER position.

2Measure the voltage between windshield wiper motor pin 4 C848, circuit 32-KA11 (WH/BLK), harness side and ground.

• Is battery voltage registered?

Yes

CHECK the windshield wiper motor according to the component testing instructions included with this section. If necessary, INSTALL a new component. CHECK the system for proper operation.

No

Go to C3

C3: CHECK HIGH SPEED WIPER CIRCUIT TO WINDSHIELD WIPER MOTOR

1Enter the OFF position.

2Disconnect Windscreen Wiper/Washer Switch - C441.

3Measure the resistance between wiper/washer switch pin 8 C441, circuit 32-KA11 (WH/BLK), harness side and windshield wiper motor pin 4 C848, circuit 32-KA11 (WH/BLK), harness side.

• Is the resistance less than 2 ohms?

Yes

Go to C4

No

REPAIR short(s) between wiper/washer switch and windshield wiper motor using the wiring diagrams. CHECK for proper system operation.

C4: CHECK THE CORRECT OPERATION OF THE WINDSHIELD WIPER MOTOR

1Connect Windshield Wiper Motor - C848.

2Connect the jumper wire to the wiper/washer switch connector C441, between pin 6, circuit 15-KA19 (green/orange), and pin 8, circuit 32-KA11 (white/black), on the harness side.

3Enter the ON position.

4Check the operation of the windshield wipers.

• Is the windshield wiper motor operating properly (in high speed mode)?

Yes

CHECK the wiper/washer switch according to the component testing instructions included with this section. If necessary, INSTALL a new component. CHECK the system for proper operation.

No

CHECK the windshield wiper motor according to the component testing instructions included with this section. If necessary, INSTALL a new component. CHECK the system for proper operation.



PINPOINT TEST D: INTERMITTENT WIPER MODE NOT FUNCTIONING CORRECTLY (LOW/HIGH SPEED WIPER MODE FUNCTIONING CORRECTLY)


STATES

DETAILS/RESULTS/ACTIONS

D1: CHECK CONTROL CIRCUIT TO WINDSHIELD WIPER RELAY

1Enter the OFF position.

2Disconnect Windshield Wiper Relay - C1019.

3Enter the ON position.

4Measure the voltage between pin 1 of the windshield wiper relay C1019 and ground.

• Is battery voltage registered?

Yes

Go to D2

No

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.

D2: CHECK POWER SUPPLY TO WINDSHIELD WIPER RELAY

1Measure the voltage between pin 5 of the windshield wiper relay C1019 and ground.

• Is battery voltage registered?

Yes

Go to D3

No

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.

D3: CHECK WINDSHIELD WIPER RELAY CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY

1Measure the voltage between pin 2 of the windshield wiper relay C1019 and ground.

• Is battery voltage registered?

Yes

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.

No

Go to D4

D4: CHECK THE WINDSHIELD WIPER RELAY FOR CORRECT FUNCTIONING

1Enter the OFF position.

2CHECK the windshield wiper relay according to the component testing instructions included with this section.

• Is the relay working properly?

Yes

Go to D5

No

CHECK that the system is working correctly. CHECK that the system is working correctly.

D5: CHECK THE POWER SUPPLY TO THE INTERMITTENT CLEANING MODE IN THE CIRCUIT TO THE CTM

1Connect Windshield Wiper Relay - C1019.

2CHECK the system using WDS. If any DTCs are reported, resolve those codes. CHECK the system for proper operation. If the system fails again, perform the following testing steps.

3Enter the OFF position.

4Disconnect Central Junction Box (CJB) - C15.

5Enter the ON position.

6Turn the wiper/washer switch to the INTERMITTENT WIPER position.

7Measure the voltage between pin 6 C15 CJB, circuit 8-KA19 (WH/BLK), harness side and ground.

• Is battery voltage registered?

Yes

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.

No

Go to D6

D6: CHECK THE WIPER/WASHER SWITCH FOR CORRECT OPERATION

1Enter the OFF position.

2Disconnect Windscreen Wiper/Washer Switch - C441.

3CHECK the wiper/washer switch according to the component testing instructions included with this section.

• Is the switch working properly?

Yes

With variable speed intermittent cleaning mode: Go to D7

Without variable speed intermittent wipe mode: REPAIR short circuit(s) between CJB pin 6 C15 and wiper/washer switch using the wiring diagrams. CHECK the system operates correctly.

No

INSTALL a new wiper/washer switch. CHECK the system for proper operation.

D7: CHECK CONTROL CIRCUIT 8-KA18 (WHITE) TO CTM FOR OPEN

1Connect Central Junction Box (CJB) - C15.

2Disconnect Central Junction Box (CJB) - C11.

3Measure the resistance between CJB pin 15 C11, circuit 8-KA18 (white), harness side and wiper/washer switch pin 1 C441, circuit 8-KA18 (white), harness side.

• Is the resistance less than 2 ohms?

Yes

Go to D8

No

REPAIR the short circuit(s) between pin 15 C11 CJB and the wiper/washer switch using the wiring diagrams. CHECK the system is operating correctly.

D8: CHECK CONTROL CIRCUIT 8-KA18 (WHITE) TO CTM FOR SHORT TO POWER SUPPLY

1Connect Windscreen Wiper/Washer Switch - C441.

2Enter the ON position.

3Turn the wiper/washer switch to the OFF position.

4Measure the voltage between pin 15 C11 CJB, circuit 8-KA18 (white), harness side and ground.

• Is battery voltage registered?

Yes

REPAIR the short to power in the circuit connected to wiper/washer switch pin 1 C441 using the wiring diagrams. CHECK the system for proper operation.

No

Go to D9

D9: CHECK CONTROL CIRCUIT 8-KA18 (WHITE) TO CTM FOR SHORT TO GROUND.

1Enter the OFF position.

2Measure the resistance between pin 15 C11 CJB, circuit 8-KA18 (white), harness side and ground.

• Does the resistance exceed 10 kOhm?

Yes

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.

No

REPAIR the short to ground in the circuit(s) connected to wiper/washer switch pin 1 C441 using the wiring diagrams. CHECK the system for proper operation.



PINPOINT TEST E: WASH AND CLEANING FUNCTION DOES NOT WORK


STATES

DETAILS/RESULTS/ACTIONS

E1: CHECK THE SYSTEM USING WDS.

1CHECK the system using WDS.

• Are any DTCs logged?

Yes

Process these codes. CHECK the system is working properly.

No

Go to E2

E2: CHECK THE CLEANING AND WASHING CIRCUIT TO THE CTM

1Enter the OFF position.

2Disconnect the Central Timer Module (CTM) - C1000.

3Enter the ON position.

4Measure the voltage at the C1000 CTM connector, between pin 27 and pin 17.

• Is battery voltage registered?

Yes

Go to E4

No

Go to E3

E3: CHECK THE WIPER/WASHER SWITCH FOR CORRECT OPERATION

1Enter the OFF position.

2Disconnect Windscreen Wiper/Washer Switch - C441.

3CHECK the wiper/washer switch according to the component testing instructions included with this section.

• Is the switch working properly?

Yes

REPAIR open circuit between C1000 CTM pin 27 and wiper/washer switch using the wiring diagrams. CHECK for proper system operation.

No

INSTALL a new wiper/washer switch. CHECK the system for proper operation.

E4: CHECK THE CORRECT FUNCTIONING OF THE WIPER/WASHER SWITCH

1Enter the OFF position.

2Disconnect Windscreen Wiper/Washer Switch - C441.

3CHECK the wiper/washer switch according to the component testing instructions included with this section.

• Is the switch working properly?

Yes

Go to E5

No

INSTALL a new wiper/washer switch. CHECK the system for proper operation.

E5: CHECK THE CLEANING AND WASHING CIRCUIT DIRECTED TO THE WIPER SWITCH/WINDSCREEN WASHERS

1Connect Windscreen Wiper/Washer Switch - C441.

2Enter the ON position.

3Measure the voltage at the C1000 CTM connector, between pin 29 and pin 17.

• Is battery voltage registered?

Yes

REPAIR open in circuit 31-KA19 (Black) between wiper/washer switch and ground G14 using the wiring diagrams. CHECK for proper system operation.

No

REPAIR open circuit 32-KA6 (WH/BLK) between wiper/washer switch and S14 using the wiring diagrams. CHECK the system for proper operation.



PINPOINT TEST F: WIPERS DO NOT STOP IN THE CORRECT OFF POSITION

STATES

DETAILS/RESULTS/ACTIONS

F1: DETERMINE STATE

1Determine the vehicle configuration.

• Is the vehicle equipped with rear window wipers?

Yes

Go to F2

No

Go to F3

F2: DETERMINE THE STATE IN WHICH THE MALFUNCTION OCCURS.

1Enter the ON position.

2Turn the wiper/washer switch to the REAR WIPER position and to the OFF position.

3Check the idle position of the windshield wipers.

• Do the rear window wipers stop in the correct idle position?

Yes

Go to F3

No

CHECK the rear window wiper motor according to the component testing instructions included with this section.

F3: CHECK THE WINDSHIELD WIPER RELAY FOR CORRECT FUNCTIONING

1Enter the OFF position.

2Disconnect Windshield Wiper Relay - C1019.

3Connect the jumper wire to the windshield wiper relay C1019, between pin 3 and pin 4.

4Enter the ON position.

5Activate ONE-TIME CLEANING.

6Check the idle position of the windshield wipers.

• Do the wipers stop in the correct idle position?

Yes

INSTALL a new windshield wiper relay. CHECK the system for proper operation.

No

Go to F4

F4: CHECK CONTROL CIRCUIT(S) TO WINDSHIELD WIPER MOTOR

1Enter the OFF position.

2Connect Windshield Wiper Relay - C1019.

3Disconnect Windshield Wiper Motor - C848.

4Measure the resistance at the windshield wiper motor between pin 2 of C848, circuit 32-KA9 (WH/BL) and pin 5, circuit 32-KA10 (WH/GN), harness side.

• Is the resistance less than 2 ohms?

Yes

Go to F5

No

Go to F6

F5: CHECK THE POWER SUPPLY OF THE NON-WORKING POSITION FUNCTION OF THE WINDSHIELD WIPERS DIRECTED TO THE ELECTRIC MOTOR OF THE WINDSHIELD CLEANERS

1Enter the ON position.

2Measure the voltage between windshield wiper motor C848 pin 3, circuit 15-KA9 (Green/Red) and ground.

• Is battery voltage registered?

Yes

CHECK the windshield wiper motor according to the component testing instructions included with this section. If necessary, INSTALL a new component. CHECK the system for proper operation.

No

REPAIR the short circuit(s) between CJB pin 1 C17 and windscreen wiper motor using the wiring diagrams. CHECK the system operates correctly.

F6: CHECK CJB

1Disconnect Central Junction Box (CJB) - C14.

2Disconnect the Central Timer Module (CTM) - C1000.

3Disconnect Windshield Wiper Relay - C1019.

4Measure the resistance at the CJB, between pin 9 of C14, CJB side and

- pin 4 C1019 windshield wiper relay.

- pin 7 C1000 CTM.

• Is the resistance less than 2 ohms in both cases?

Yes

Go to F7

No

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.

F7: CHECK THE ELECTRICAL CIRCUIT TO THE WINDSHIELD WIPER MOTOR

1Measure the resistance between CJB pin 9 C14, circuit 32-KA9 (WH/BU), harness side and windshield wiper motor pin 2 C848, circuit 32-KA9 (WH/BU), harness side.

• Is the resistance less than 2 ohms?

Yes

Go to F8

No

REPAIR the short circuit(s) between CJB pin 9 C14 and windscreen wiper motor using the wiring diagrams. CHECK the system is operating correctly.

F8: CHECK WIPER/WASHER SWITCH

1Disconnect Windscreen Wiper/Washer Switch - C441.

2CHECK the wiper/washer switch according to the component testing instructions included with this section. If necessary, INSTALL a new component. CHECK the system for proper operation.

• Is the wiper/washer switch working properly?

Yes

REPAIR open circuit 32-KA19 (WH/BLK) between wiper/washer switch and windshield wiper relay using the wiring diagrams. CHECK for proper system operation.

No

INSTALL a new wiper/washer switch. CHECK the system for proper operation.



PINPOINT TEST G: WINDSHIELD WIPERS DO NOT FUNCTION CORRECTLY WITH THE WASHING FUNCTION

STATES

DETAILS/RESULTS/ACTIONS

G1: CHECK CJB

1CHECK the system using WDS. If any DTCs are reported, resolve those codes. CHECK the system for proper operation. If the system fails again, perform the following testing steps.

2Enter the OFF position.

3Disconnect the Central Timer Module (CTM) - C1000.

4Disconnect the Double Acting Windshield Washer Pump Motor - C828.

5Enter the ON position.

6Measure the voltage at the C1000 CTM connector, between pin 27 and pin 17.

• Is battery voltage registered?

Yes

Go to G2

No

Check the CJB. If necessary, INSTALL a new element. CHECK the system for proper operation.

G2: CHECK THE WASH AND CLEAN CIRCUIT TO THE CTM

1Enter the OFF position.

2Disconnect Central Junction Box (CJB) - C14.

3Enter the ON position.

4Measure the voltage between pin 1 C14 CJB, circuit 32-KA6A (WH/BK), harness side and ground.

• Is battery voltage registered?

Yes

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.

No

REPAIR the short circuit(s) between CJB C14 pin 1 and S14 connection using the wiring diagrams. CHECK the system is operating correctly.



PINPOINT TEST H: WINDSHIELD WASHER PUMP NOT WORKING

STATES

DETAILS/RESULTS/ACTIONS

H1: CHECK CIRCUIT TO WASHER PUMP MOTOR FOR OPEN CIRCUIT

1Enter the OFF position.

2Disconnect the Double Acting Windshield Washer Pump Motor - C828.

3Enter the ON position.

4Measure the voltage between pin 1 C828 dual acting windshield washer pump motor, circuit 32-KA34 (WH/BLK), harness side and ground.

• Is battery voltage registered?

Yes

Go to H2

No

REPAIR the short circuit(s) between the dual action windshield washer pump motor and connection S14 using the wiring diagrams. CHECK the system for proper operation.

H2: CHECK CIRCUIT TO TWO-WAY WINDSHIELD WASHER PUMP MOTOR FOR OPEN CIRCUIT

1Measure the voltage between pin 2 C828 of dual acting windshield washer pump motor, circuit 33-KA34 (YE/BLK), harness side and ground.

• Is battery voltage registered?

Yes

CHECK the dual-action windshield washer pump motor. If necessary, INSTALL a new element. CHECK the system for proper operation.

No

REPAIR the short circuit(s) between pin 2 C828 of the windscreen washer pump motor and the CJB using the wiring diagrams. CHECK the system is operating correctly.



PINPOINT TEST I: CONTROLLED INTERMITTENT CLEANING MODE IS NOT FUNCTIONING CORRECTLY

STATES

DETAILS/RESULTS/ACTIONS

I1: CHECK THE WIPER/WASHER SWITCH FOR CORRECT OPERATION

1CHECK the system using WDS. If any DTCs are reported, resolve those codes. CHECK the system for proper operation. If the system fails again, perform the following testing steps.

2Enter the OFF position.

3Disconnect Windscreen Wiper/Washer Switch - C441.

4CHECK the wiper/washer switch according to the component testing instructions included with this section.

• Is the switch working properly?

Yes

Go to I2

No

INSTALL a new wiper/washer switch. CHECK the system for proper operation.

I2: CHECK THE ADJUSTABLE INTERMITTENT CLEANING CIRCUIT TO THE CTM

1Disconnect Central Junction Box (CJB) - C11.

2Measure the resistance between CJB pin 15 C11, circuit 8-KA18 (white), harness side and wiper/washer switch pin 1 C441, circuit 8-KA18 (white), harness side.

• Is the resistance less than 2 ohms?

Yes

Go to I4

No

REPAIR the short circuit(s) between pin 15 C11 CJB and the wiper/washer switch using the wiring diagrams. CHECK the system is operating correctly.

I3: CHECK THE CTM CONTROLLED INTERMITTENT CLEANING CIRCUIT FOR A SHORT TO POWER SUPPLY

1Connect Windscreen Wiper/Washer Switch - C441.

2Enter the ON position.

3Turn the wiper/washer switch to the OFF position.

4Measure the voltage between pin 15 C11 CJB, circuit 8-KA18 (white), harness side and ground.

• Is battery voltage registered?

Yes

REPAIR the short to power in the circuit(s) connected to wiper/washer switch pin 1 C441 using the wiring diagrams. CHECK the system for proper operation.

No

Go to I4

I4: CHECK CONTROLLED INTERMITTENT CLEANING CIRCUIT TO CTM FOR SHORT TO GROUND"

1Enter the OFF position.

2Measure the resistance between pin 15 C11 CJB, circuit 8-KA18 (white), harness side and ground.

• Does the resistance exceed 10 kOhm?

Yes

Check CJB If necessary, INSTALL a new element. CHECK the system for proper operation.

No

REPAIR the short to ground in the circuit(s) connected to wiper/washer switch pin 1 C441 using the wiring diagrams. CHECK the system for proper operation.



PINPOINT TEST J: HEADLAMP WASHING FUNCTION DOES NOT WORK CORRECTLY

STATES

DETAILS/RESULTS/ACTIONS

J1: CHECK POWER SUPPLY TO HEADLAMP WASHER RELAY

1Enter the OFF position.

2Disconnect Headlamp Washer Relay - C1004.

3Enter the ON position.

4Measure the voltage between pin 2 of the C1004 headlamp washer relay and ground.

• Is battery voltage registered?

Yes

Go to J4

No

Go to J2

J2: CHECK FUSE F13

1Enter the OFF position.

2CHECK Fuse F13 (BJB).

3CHECK FUSE F13 (30A)

• Is the fuse good?

Yes

Go to J3

No

Install a new fuse F13 (30A). If the fuse blows again, LOCATE and REPAIR the short circuit using the wiring diagrams. CHECK the system for proper operation.

J3: CHECK POWER SUPPLY TO FUSE F13

1Enter the ON position.

2Measure the voltage between fuse F13 (BJB) and ground.

• Is battery voltage registered?

Yes

Go to J4

No

Check BJB If necessary, INSTALL a new element. CHECK the system is working properly.

J4: CHECK CONTROL CIRCUIT (WHEN HEADLIGHTS ON) TO HEADLIGHT WASHER RELAY

1Enter the OFF position.

2Connect Fuse F13 (BJB).

3Enter the ON position.

4Turn the light switch to the "LOW BEAM" position.

5Measure the voltage between pin 5 of the C1004 headlamp washer relay and ground.

• Is battery voltage registered?

Yes

Go to J5

No

REPAIR short(s) between light switch and headlamp washer relay using the wiring diagrams. CHECK for proper system operation.

J5: CHECK GROUND CONNECTION OF HEADLAMP WASHER RELAY

1Turn the light switch to the "OFF" position.

2Enter the OFF position.

3Measure the resistance between pin 1 of the C1004 headlamp washer relay and ground.

• Is the resistance less than 2 ohms?

Yes

Go to J6

No

REPAIR the short(s) between the headlamp washer relay and ground G37 using the wiring diagrams. CHECK the system for proper operation.

J6: CHECK WASHER CIRCUIT TO HEADLAMP WASHER RELAY

1Enter the ON position.

2Measure the voltage between pin 3 of the headlamp washer relay C1004, circuit 32-KA22 (WH/RD) and ground.

• Is battery voltage registered?

Yes

Go to J7

No

REPAIR the short(s) between pin 3 of the headlamp washer relay C1004 and connection S14 using the wiring diagrams. CHECK the system for proper operation.

J7: CHECK HEADLAMP WASHER PUMP.

1Connect Headlight Washer Relay - C1004.

2Disconnect Headlamp Washer Pump Motor - C745.

3Enter the ON position.

4Turn the light switch to the "LOW BEAM" position.

5During measurement, activate the WINDSHIELD WASHER.

6Measure the voltage between headlamp washer pump motor pin 1 C745, circuit 15S-KA21 (Green/Yellow), harness side and ground.

• Is battery voltage registered?

Yes

Go to J8

No

REPAIR the open circuit between pin 4 of the C1004 headlamp washer relay and the headlamp washer pump motor using the wiring diagrams. CHECK the system for proper operation.

J8: CHECK HEADLAMP WASHER PUMP GROUND CONNECTION

1Enter the OFF position.

2Measure the resistance between pin 2 C745 headlamp washer pump motor, circuit 31-KA21 (black), harness side and ground.

• Is the resistance less than 2 ohms?

Yes

CHECK the headlamp washer pump motor. If necessary, INSTALL a new element. CHECK the system for proper operation.

No

REPAIR the short(s) between the headlamp washer pump motor and ground G37 using the wiring diagrams. CHECK the system for proper operation.








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